Finding the Fourth Proportional to 10,988.72, 16,483.12 and 2,668.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,988.72 : 16,483.12 = 2,668.72 : x
2. Step 2: Convert to fraction form
   10,988.72/16,483.12 = 2,668.72/x
3. Step 3: Cross multiply
   10,988.72x = 16,483.12 × 2,668.72
4. Step 4: Simplify right side
   10,988.72x = 43,988,832.01
5. Step 5: Solve for x
   x = 43,988,832.01/10,988.72
6. Step 6: Final answer
   x = 4,003.09